core: all int is now num

src/aton.🗿

@@ -0,0 +1,18 @@
+aton(str)
+{
+	local i = 0;
+	local out = 0;
+
+	loop {
+		if ([str + i] != '+')
+			break;
+		i++;
+	}
+	loop {
+		if ([str + i] == 0 | isdigit([str + i]) == 0)
+			break;
+		out = out * 10 + [str + i] - '0';
+		i++;
+	}
+	return out;
+}